"401 Incorrect API key provided" even if it has the correct OPENAI_KEY (even after a API key update)

Hi all,
first of all, I'm sure my OpenAI API Key works because I'm using it on a WSL2 machine (Ubuntu 22.04) on the same Windows 11 machine.

On a Windows 11 command prompt window (cmd.exe) I executed `micro-agent` (after installing it through `npm`).
The output was the following:
>C:\Users\edoardo.molinatti>micro-agent
>(node:25320) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
>(Use `node --trace-deprecation ...` to show where the warning was created)
>
>┌ 🦾 Micro Agent
>│
>◇ Welcome newcomer! What is your OpenAI key? (this is kept private)
>│ sk-proj-*******************************************************************************************************************************************************qikA
>│
>◇ What would you like to do?
>│ A function that checks the disk used space telling me a list of the "heaviest" folders on the root filesystem, with a customizable depth level
>which should be 3 by default (this is the recursive depth of the folder to visualize, calculated from the root)
>│
>◓
>✖ 401 Incorrect API key provided: sk-proj-*******************************************************************************************************************************************************qikA. You can find your API key at https://platform.openai.com/account/api-keys.
> at APIError.generate (file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/node_modules/openai/error.mjs:44:20)
> at OpenAI.makeStatusError (file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/node_modules/openai/core.mjs:286:25)
> at OpenAI.makeRequest (file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/node_modules/openai/core.mjs:330:30)
> at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
> at async getFileSuggestion (file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/dist/cli.mjs:967:22)
> at async interactiveMode (file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/dist/cli.mjs:735:33)
> at async file:///C:/Users/edoardo.molinatti/AppData/Roaming/npm/node_modules/@builder.io/micro-agent/dist/cli.mjs:1776:11
>
> micro-agent v0.1.4
>
> Please open a Bug report with the information above:
> https://github.com/BuilderIO/micro-agent/issues/new

As you can see I specified my OpenAI API key as requested, but it didn't work.
If I run `micro-agent config` I see that the key is correct, but I tried to update it re-pasting it after a double-check (using the command `micro-agent config set OPENAI_KEY=`).
It still doesn't work (with the same error output).

Can you please tell me what could be wrong and/or what to check?

Thank you very much for any help

Reproduce the Windows command-prompt flow described in the issue, then start at dist/cli.mjs around interactiveMode and getFileSuggestion, where the reported stack trace reaches the OpenAI request. Compare the configured key and request behavior with the working WSL2 setup; done means identifying and fixing or documenting the cause of the 401 for a valid key.

Written by the indexing model from the issue text.